Weighing-scale.



B. D. EMANUEL. WEIGHING SCALE. APPLICATION FILED JAN. 20, 1912.

1,074,421 6 Patented Sept. 30, 1913.

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B. D. EMANUEL.

Patented Sept. 30, 1913;

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UNITED STATES PATENT ()FFIOE.

BENJAMIN n. EMANUEL, or ANDERSON, INnIaNA.

WEIGHING-SCALE,

Specification of Letters latent. Patented Sept, 30, 1913.

Application filed January 20,1912. Serial No, 672,484.

To all whom it may concern:

Be it known that I, BENJAMIN D. JEMAN UEL, a citizen of the United States; and a resident of Anderson, county of Madison, and State of Indiana, have invented a certain useful lVeighingScale; and I do hereby declare that the following is a full, clear,'

idea of connecting the beam 'operatively with the pendulum and not with the indi: cator. When the scale beam is of the first order of leverage, the platform being outside of the fulcrum, the inner end of thescale beam must be weighted to over-balance the platform and when said weighted inner 0 end of the scale beam is operatively carried by the indicator shaft and also the pcn dulum is connected with the indicator shaft, said indicator shaft carries the indicator, pendnlum and weighted end of the scale beam. This places undue load upon the shaft of the indicator, so that it is ordinarily not of sufficient strength to carry such weight and the result is that in such scales, there are frequent complaints of inacci1- racy and other trouble due to the fact that such bearings for the indicatorshaft become damaged. With this present invention the indicator shaft carries nothing but the indicator andthe pendulum is carried by a separate shaft.

\Vhile the invention is shown hereinwith a scale beam of the first order, still it is not necessarily limited to that kind of scale.

The nature of the invention will be under stood from the accompanying drawings and the following description and claims.

In the drawings, Figure 1 is a front clevation of the scale in one'form, showing the scale at zero, and parts being broken away. Fig. 2 is the same with an eight-pound weight on the platform. Fig. 3is a view of the same asthe left-hand half of Fig. 1, with a modifiedform of the connection between the pendulum and indicator. Fig. 4 is the same'as Fig. 3 with the parts actuated. as in Fig. 2. Fig. 5 shows the left-hand half of what appears in Fig. 1 with a modified form of the connection between the scale beam and pendulum mounting. Fig. 6 is the same as Fig. 5 with the parts actuatedas in Fig.9.

In the drawings there is a scale with a base 10, a lower substantially cylindrical housing 11 thereon, and an upper fan-shaped housing 12 extending above the lower housing 11. The fan-shaped housing carries a weight chart 13, but the invention-is not limited to any particular kind of chart.

-The indicator 14 is mounted on the indicator shaft 15 with suitable knife edge bear-' ings in the wellTihown manner, which, however, is not fully shown herein because the same is familiar to all skilled in the art.

16 is a small returning weight for the indicator and extends from its shaft at an angle to the indicator. .The indicator shaft has secured on it also a cam dlSk'17. from n u a which a metal tape 18 extends down to the pendulum shaft 19. This pendulum shaft is mounted by the knife edges 20 on suitable bearing 21. The pendulum 22 ektends from the pendulum, shaft 19. The pendulum shaft 19 also has secured to it, here integrally, a segmental gear 23 which meshes with a segmental gear 24 on the weighted end 2515f the scale beam 26. The scale beam is fulcrumed at 27 between its ends on the posts 28 from the base. The platform 30 is pivotally supported at, 31 on the outer end of the scale beam, beyond the fulcrum thereof, so as .to make the scale here shown one of the first principle of leverage.

There is a check bar 32 extending from slot 34 and then is turned upward, as indicatedby dotted'lincs, and'its upper end is pivotally -connected to a leg 35 which is the platform into the housing through a pivoted to the housing l2. There is also a dash pot 36 with a plunger rod 37 connected with a small arm 38 which extends from the inner end of the scale beam. The upper check and dash pot construction constitute no particular part of this invention.

The weighted end 25 of the scale beam normally holds the pendulum weight 22 in its elevated position and the weight 16 normally holds the indicator-at zero. As load is applied on the platform 30, the inner end of the scale beam correspondingly rises andpermits the pendulum weight 22 to descend and give the indicator forward movement along the chart 13 so that the chart tion with the scale necessary. The weight 16 will indi ate the weight of the load. In Fig. 2 there is an eight-pound load 38 onthe platform, and the indicator has been moved to the numeral 8 on the chart.

While it is stated above that the pendulum 22 actuates the indicator, that is not wholly true as the weighted end of the lever may cooperate with the pendulum, as in the form herein shown, and causea positive connection between the Weighted end of the the pendulum. The

the lever will positively actuate the indicator in the construction herein shown, but the positive connection between the scale beam and pendulum shaft is not absolutely shouldv only "be heavy enough to return the indicator and not'afi'ord any appreciable resistance to the actuation of the indicator by the pendulum.

'The pendulum travels downwardly in proportion to the load placed upon the platform until equilibrium is reached. The weight 16 and pendulum 22 oppose each other and move in opposite directions.

In the modified form shown in Figs. 3

and 4, a still connection or rod 118 is pro vided between the shaft of the indicator and the. shaft of the pendulum instead-of the flexible metal ribbon 18, shown in Fig. 1.

This enables the weight 16 to be dispensed with as the weight 25 on the inner end of the beam 26 willreturn the indicator to zero andhold it there because of the positive connection between the parts.

In the modified form shown in Figs. 5 and 6, there is shown a metal ribbon connection between the segmental end of the scale beam and the segmental portion 23 of the pendulum shaft. Instead of the gearing shown in Fig. l, a metal ribbon 40 is connected at its upper end to the upper dart of the segment 23 and the other end 0 the ribbon is secured 'to the lower part of the face of the segmental portion 25. The pendulum shaft, by means'of its ribbon connecbeam, will be actuated I by the weight 25 when there is no load and scale beam raise the pendulum 22 to its normal elevated. position and hold it there. When a load is placed on the platform, the weight 25 of the will be accordinglv elevated and that will permit the penduluni 22 to descend and correspondingly move its shaft and segits downward such movement of the pendulum will also give the indicator forward movement the same as in Fig l. In this 'form'the weight 16 is necessary to return the indicator even if the stiff connection should be provided between the indicator and pendulum. because the weighted end of the beam can actuate only in its downward movement in this form and not in its upward movement.

I claim as my invention:

1. A weighing scale including an oscillatory indicator, a weight connected therewith tending to return it to zero, a pendulum fulcrumed separately from said indicator, a connection between the pendulum and indicator arranged so that the indicator\will be given its forward movement by said pen dulum, a. scale beam, means actuated by the scale beam for maintaining the pendulum in an elevated position when there is no load and yielding to the downward .action of the pendulum when the load is applied, and means carried by the scale beam for supporting the load. I

2 A weighing scale including an indicator, a shaft on whichit is mounted, a counter-balance extending from said shaft at such an angle to the indicator that it will tend to return the indicator to zero, a pendulum, a shaft independent of the indicator shaft to which the pendulum is-.s ecured, a flexible connection between said two shafts whereby the downward move ment of the pendulum will tend to give; the indicator a forward movement, a segmental gear secured to the pendulum shaft, a scale beam ful'crumed between its ends with the end adjacent said indicator shaft weighted and provided with a, segmental meshing with the segmental gear on the indicator shaft and geared so that when the weigl'ited end of the scale beam is in position the pendulum will be elevated, and means on the outer end of the scale beam for supporting the load.

In witness whereof, I have hereunto affixed my signature in the presence of the witnesses herein named.

BENJAMIN D. EMANUE i vitnesses ii G. H. Bomn,

O. MCLAUGHLIN. 

